Influence in my life essay Marked by Teachers

write an essay on the happiest day of my life JFC CZ as

Once animals arrived on the evolutionary scene and filled most possible niches, new biological foundations could not be built, with superstructures built atop them, and hope to compete for resources that were already being consumed in the food chains. Developing the original animal body plans took millions of years. There were many other possible body plans that have been developed in the early days of animals, which might have worked wonderfully, but those chosen ones worked well enough for survival and reproduction, and once chosen, there was no going back. There really could not be, unless animal life was wiped out and could start over, as they are the last common ancestors of animals (and eliminating all animal life would lead to great plant extinctions for starters, such as ). The biological commitments to those basic modes of existence had their own inertia, and it starts at the root, with the DNA.

show that some animals were mobile before the Cambrian Explosion. Sponges were probably the but they were immobile except for their flagella drawing water through them, which carried food and oxygen in and waste out. The first creatures that we would recognize as animals were probably worms crawling atop ocean sediments. As lowly as the worm might seem, it would have needed muscles, bilateral symmetry, a circulatory and digestive/excretory system, and a nervous system run by a brain; that distant ancestor probably possessed . Some early worms may have even had rudimentary eyes. And of possibly eonic importance, worms probably made the first poop. The evolution of may have been a seminal event in the organic carbon burial process. Sponges may have also been largely responsible for initially removing oceanic carbon, which helped increase atmospheric oxygen and helped ventilate the oceans. Until then, organic carbon from dead life forms would not have settled to the ocean floor, but would have floated in the water column and been recycled by other life forms. Although the hypothesis , feces sinking to the ocean floor may have been how life’s burial of carbon began, as well as robbing sulfate-reducing bacteria in the water column of their nutrients and thus enabling oceanic waters to remain oxygenated. Ediacaran fauna did not burrow into ocean sediments, but deep burrowing was characteristic of Cambrian sediments. There is debate today whether Cambrian burrowing was a of oxygenating the ocean floor.

About 2.7 bya, dissolved iron in anoxic oceans seems to have begun reacting with oxygen at the surface, generated by cyanobacteria. The dissolved iron was oxidized from a soluble form to an insoluble one, which then precipitated out of the oceans in those vivid red (the color of rust) layers that we see today and are called ("BIFs"), which became an oxygen sink and kept atmospheric oxygen low. The GOE is widely accepted to have created almost all of the BIFs, but it is not the only BIF-formation hypothesis and there is a great deal of controversy, but life processes are generally considered to be primarily responsible for forming the BIFs. Most iron in the crust is bound in silicates and carbonates, and it takes a great deal of energy to extract the iron from those minerals; the oxides that comprise BIFs are much less energy-intensive to refine, as the iron is so concentrated. Far less ore needs to be melted to get an equivalent amount of iron. BIFs are the source of virtually all iron ore that humans have mined. Life processes almost certainly performed the initial work of refining iron, and humans easily finished the job billions of years later. Copper was not refined by life processes, and copper ore takes twice as much energy to refine as iron ore does.

FREE Second Chance In Life Essay - ExampleEssays

At this juncture, I will ask my readers to perform an exercise that I first saw described by Peak Oil advocate , which is to lay aside data and graphs and just think about how energy makes everything in our daily lives possible. Think about your food, water, mode of transportation, and materials that comprise your home and possessions, and think of the role that energy played in providing them. Think about the energy that you use each day in powering your home and in your transportation, even if it is just walking. Then imagine running out of energy. When you flipped on a light switch, nothing happened. When you turned on the tap, no water came out. Your refrigerator stopped working, food deliveries to your community ceased, and no electricity, oil, gas, coal, or even wind or water power was available. Everything in your life would come to a sudden halt. When people have tried to demote energy below spirituality, social relations, or even made it irrelevant to economics, my question is for them to see what they can forego the longest: prayer/meditation, social interaction, sex, or energy. The fossil fuels burned to power industrial civilization provide several hundred energy slaves for each American and no less than hundreds per person in every industrialized nation. All that those energy-leveraged humans do is direct the energy, like holding the reins of a gigantic beast that each person rides each day. Airline pilots half-joke that they begin their workday by strapping jet airliners to their waists. Without that energy to direct in the myriad ways that industrialized humans use it, modern civilization would come to an abrupt end.

Recent

School Is My Second Home Essay Example for Free

I noticed several crippling weaknesses in all alternative energy efforts that I was involved with or witnessed. Most importantly, when my partner mounted his efforts, people participated primarily to serve their self-interest. While the pursuit of mutual self-interest is the very definition of politics, self-interested people were easily defeated by organized suppression, although the efforts usually self-destructed before suppression efforts became intense. Another deficiency in all mass free energy efforts was that most participants were scientifically illiterate and did not see much beyond the possibility of reducing their energy bills or becoming rich and famous. Once the effort was destroyed (and they are, if they have any promise), the participants left the alternative energy field. Also, many lives were wrecked as each effort was defeated, so almost nobody was able or willing to try again. Every time that my partner rebuilt his efforts, it was primarily with new people; few individuals lasted for more than one attempt.

English is my second language essay | Dagsljus

In 1750, only 5% of England’s pig iron was produced with coke, but by 1800, with and the continuing rising price of charcoal, British pig iron production was 150,000-200,000 metric tons annually, and almost all was coke-smelted. It was ten times greater than annual production in the 18th century’s first half, and the steep ascent began in the 1770s. In the first decade of the 19th century, it doubled again. During the 18th century, British coal production increased five-fold, to more than 15 million metric tons, and it doubled again by 1830. It took ten times its weight in fuel to produce ten tons of iron, and twenty times for copper. One reason for iron’s relative “cheapness,” energy-wise, is that life processes into oxides. In 1900, the British produced five million tons of pig iron annually, the USA produced twice as much, and Germany produced more than six million tons. In 2011, the UK produced only seven million tons of pig iron, China produced nearly a hundred times as much, and , which was several thousand times what England, the early leader in industrialization, produced two centuries earlier. In 2008, global coal production was estimated at 5.8 billion metric tons, which was nearly 400 times what the UK mined in 1800.

English is my second language essay - Why worry about the essay

was the capitalist epitome in North America’s British colonies, but his fortune was significantly amassed by running ads to capture runaway slaves and by . When the began its power play, the local newspaper reporting on the illegal proceedings was , in an early instance of capitalist censorship of the “free press.” Private “free market” censorship has always been the preferred method of capitalists, not governmental intervention, such as the way that .

Reviews

“ Although Enlightenment philosophers acknowledged their debt to Newton (the world’s most towering intellectual of his time and one of history’s greatest scientists and mathematicians), he saw nothing improper with the slave trade and in 1720. When machines began reproducing human labor, the abolition of slavery also began, as it made unskilled labor uneconomical. Slavery, particularly the genocidal forms inflicted by Europe, were viable only for situations in which little professional skill was needed. Slavery worked best in mine and plantation work that used illiterate and often-expendable people. What became the USA was unique in the European age of slavery, in that tobacco operations, unlike sugar plantations, had more seasonal labor demands. Moreover, the environment of southeast North America was conducive to long-lived and fertile slaves, so that they could reproduce. Consequently, what became the USA was a , with its large slave population largely bred, not captured. People born into slavery are easier to keep enslaved than those born free, but they had to be kept illiterate and at low skill levels, or else they might desire freedom and obtain it. Late in the American era of slavery, some slaves were taught to read, but generally only one book, which justified slavery: the Bible. All the way to , apologists for slavery used Biblical passages to justify it. Many also justified antebellum slavery with economic arguments, stating that people took better care of something they owned rather than something they rented. ”

Importance Of Education In Our Life | My Essay Point

Gallery LA Youth » Essay contest: A moment that changed your life

But it was just the birth pangs of my second life, my spiritual life.

Second Life's official website. Second Life is a free 3D virtual world where users can create, connect, and chat with others from around the world using voice and text.

From about 32 kya to 22 kya, prevailed in Europe. That culture produced the and art such as the . By 20 kya, . But as far as human expansion is concerned, the Gravettian (and related cultures) are most notorious as mammoth hunters extraordinaire for those that lived on the near the ice sheets. To , they could not swim to Sahul, but flourished everywhere else they could get to. At , they were the ultimate hunter-gatherer kill. Also, near the ice sheets, meat could be stored in the ground. Cro-Magnons did just that, and that “freezer” full of meat led to the first seasonally sedentary humans. It long predated the Domestication Revolution when people could be sedentary year-round, but while the megafauna lasted, the first signs of what came later appeared as Cro-Magnons created villages around frozen mammoth meat. Gravettians hunted along migration routes and set traps and ambushes for mammoths. For thousands of years, mammoths were the primary focus of Gravettian hunters, and many scientists believe that humans at least . Gravettians probably used the bow and arrow, and using poisoned arrows on mammoths would have been child’s play, not a hazardous undertaking. They also tended to focus on the easy meat: the young, relatively defenseless, tender mammoths. Killing the offspring alone would have driven the slowly reproducing mammoths to extinction, and as the interglacial period began around 15 kya, there would have been new pressures on mammoths. One of them was that fewer mammoths meant that they were not terraforming their environments like they used to, and the warming climate probably reduced their range. For a mammoth facing humans, there was literally no place to hide (except maybe in the living room), and there is little reason to think that hunters would have eased up when mammoth numbers dwindled. If anything, their efforts would have to get the last ones, as they competed and fought over the final mammoths. In one lifetime or even several, the changes would have been barely noticeable, if at all. There was simply no way out for mammoths, and they went extinct south of the European ice sheets under the ministrations of Cro-Magnon hunters. More evidence of their fate is some mammoths surviving in refugia: islands where humans did not arrive until thousands of years later. mammoths survived on in the chain off of Alaska until less than six kya, and went extinct when humans arrived. Several hundred apparently full-sized mammoths survived on near Siberia and went extinct less than five kya, when humans arrived. In today's France and Spain, Gravettians also semi-settled along the migration routes of reindeer and red deer. From Spain across Europe, into today's Russia, Gravettians hunted migrating herds, and not only the mammoth was driven to extinction, but also the wooly rhino, the Irish elk, the musk ox, and steppe bison were driven to extinction as the ice sheets retreated. Neanderthals had been ambush hunting in similar fashion, and those animals, like the African megafauna, grew wary of humans, and killing those animals probably took planning and guile.